Solutions by everydaycalculation.com
1st number: 4/10, 2nd number: 1 3/15
410 - 1815 is -45.
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Related: 8/10-18/15 4/10-36/15 4/20-18/15 4/10-18/30 12/10-18/15 4/10-54/15 4/30-18/15 4/10-18/45 20/10-18/15 4/10-90/15 4/50-18/15 4/10-18/75 28/10-18/15 4/70-18/15
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